Acebucks, the developers of a virtual currency for social network Facebook, has raised real cash — $1.5 million — from a group of uberinvestors — Wallstrip's Howard Lindzon, Facebook board member Peter Thiel, Tribe.net founder Mark Pincus, among others. Why? Because virtual currencies like Flooz, Beenz, and several other Web currencies proved so successful, we're sure. [All Facebook]